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Electrochemical Behaviour of Graphene-poly (3,4-ethylenedioxythiophene) (PEDOT) Composite Electrodes for Supercapacitor Applications

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : Bulletin of Materials Science

Source : Bulletin of Materials Science, Indian Academy of Sciences, Volume 37, Number 1, p.61-69 (2014)

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Keywords : 3, 4-ethylenedioxythiophene, Composite materials, Deposition, Electrochemical behaviour, Electrochemical characteristics, Electrochemical electrodes, Electrochemical measurements, Electrochemical properties, Electrochemical Techniques, Electrolytic capacitors, Electrophoresis, Electrophoretic depositions, Electropolymerization, Graphene, Indium tin oxide substrates, Organic polymers, Polymers, Supercapacitor application

Campus : Kochi

School : Center for Nanosciences

Center : Amrita Center for Nanosciences and Molecular Medicine Move, Nanosciences

Department : Nanosciences

Year : 2014

Abstract : In this paper, we report on the electrochemical characteristics of graphene-PEDOT composite electrodes. The electrodes were made of indium tin oxide (ITO) substrates by simple processes of electrophoretic deposition of graphene followed by electropolymerization of EDOT monomer. The composite electrode was obtained by electrochemical measurements, a median specific capacitance of 1410 F/g and a median area capacitance of 199 mF cm-2 at a scan rate of 40 mVs-1. The composite showed good stability characteristics after repeated scans in cyclic voltammmetry and faredmuch better than a thin film of PEDOT. The thermal stability of the composite is also much superior when compared to the polymer with a weight loss temperature of 350 °C for the composite and 250 °C for the polymer, respectively. The above electrochemical and thermal behaviours of the composite are correlated to the unique morphology of electrodeposited graphene that provides a conductive and high surface area template for electropolymerization. © Indian Academy of Sciences.

Cite this Research Publication : D. Jacob, Mini, P. A., Balakrishnan, A., Shantikumar V Nair, and Subramanian, K. R. V., “Electrochemical Behaviour of Graphene-poly (3,4-ethylenedioxythiophene) (PEDOT) Composite Electrodes for Supercapacitor Applications”, Bulletin of Materials Science, vol. 37, pp. 61-69, 2014.

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